> 源码

`Impl类`
```java
@Override
public IPage<Vehicle> getVehiclePageList(Query query, VehicleVo vo) {
	QueryWrapper<Vehicle> wrapper = new QueryWrapper();
	wrapper.like("plate_no", vo.getPlateNo());
	wrapper.orderByAsc("create_time");
	IPage<Vehicle> page = Condition.getPage(query);
	return baseMapper.pageList(page, wrapper);
}
```

`Mapper`
```java
IPage<Vehicle> pageList(IPage<Vehicle> page, @Param(Constants.WRAPPER) QueryWrapper<Vehicle> wrapper);
```

`xml`
```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="你的XXXMapper.xml所在位置包名">
    <select id="pageList" resultType="你的 XXXMapper.java所在位置包名">
            SELECT
				*
            FROM
				vehicle v
            JOIN vs_vehicle_information vvi ON v.id=vvi.veh_ship_id
            ${ew.customSqlSegment}
    </select>
</mapper>
```

> 报错点 Parameter 'ew' not found. Available parameters are [wrapper, page, param1, param2]

`@Param` 导错包了

正确包地址：`import org.apache.ibatis.annotations.Param;`

**这个千万不能错。不注意的时候，死活找不到问题的原因。开发中细心可以省去很多找 bug 的时间。**

Parameter 'ew' not found. Available parameters are [wrapper, page, param1, param2]

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